Fastening device



FIG. 1 a front perspective view of the design for a fastening device;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a first end view thereof;

FIG. 7 is a second end view thereof, the second end view being opposite to the first end view;

FIG. 8 is a front perspective view of the design for a fastening device according to FIGS. 1-7 having first and second ends thereof coupled together;

FIG. 9 is a top view of the fastening device as shown in FIG. 8;

FIG. 10 is a bottom view of the fastening device as shown in FIG. 8;

FIG. 11 is a right side view of the fastening device as shown in FIG. 8;

FIG. 12 is a left side view of the fastening device as shown in FIG. 8;

FIG. 13 is an end view of the fastening device as shown in FIG. 8; and,

FIG. 14 is an end view opposite to the end view of FIG. 13.

The broken lines in the figures represent areas of the fastening device that form no part of the claimed design. The dot-dash lines in the figures represent boundaries between claimed and unclaimed areas. 

CLAIM The ornamental design for a fastening device, as shown and described. 